The central Texas region, including Hill Country and the Metroplex, faces a significant risk of flash flooding due to heavy rainfall. The National Weather Service has issued a moderate risk warning for flash flooding on Wednesday and Thursday. Rainfall totals could reach up to 12 inches in some areas, which may lead to localized flooding and travel disruptions. Houston is expected to see less severe impacts, with rain accumulations of 1 to 4 inches through Sunday. Residents in flood-prone areas should remain vigilant and take necessary precautions.